I figured out how to do the rest, the only thing I need to do now is to somehow change the numbers which are < 90 to a character string "low" . The values which are between 100 - 90 to convert to character string "medium". And the values larger than 100 to convert to character string "high". Then I would use this line.
plot(thrust~amtemp, jet, col=as.numeric(jet$amtemp), pch=as.numeric(jet$amtemp)) The thing is that I dont know how to convert those numerical values into "low" "medium" and "high" Hmm, but then when I think about it better if its changed to the strings above, it wont remember the exact numerical value. Basically what I want to do is make a scatterplot and then just change the color and the symbol of those 3 groups so they can be distinguished on the graph. -- View this message in context: http://www.nabble.com/Using-color-and-plotting-characters-in-a-scatterplot-matrix--Newbie-Help--tp21824880p21825882.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.